The dubs are taken from the original vocal tracks (in brackets):
Land of the Father (Africa)
Fire from the Observer (Cassandra)
Lock and Key (Open The Gate)
Youth Man (Conqueror)
Sir Niney's Rock (Give A Helping Hand)
Worthless Trap (You're No Good)
No Mercy (My Time)
Take A Dub (Take A Trip)
Dubbing With The Observer (Live After You)
Thief (Yagga Yagga)
Pay The Rent (Tenement Yard)
Revelation Fulfill (Tribulation)
Come Dub (Here I Come Again)
Jam Down (No More Will I Roam)
Fire From The Observer Station (Westbound Train)
Mischievous Dub (Wolf And Leopards)
Mr. D Brown Dub (Rock It With Me)
Dub Around The World (Traveling Man)
Silver Bullet (Silver Words)
One In The World Style (Westbound Train)